Finding the Fourth Proportional to 290,413,643.80, 435,620,465.70 and 137,358,635.80
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Solution
The fourth proportional to 290,413,643.80, 435,620,465.70 and 137,358,635.80 is: 206,037,953.70
Step by Step Solution
- Step 1: Write the proportion equation
290,413,643.80 : 435,620,465.70 = 137,358,635.80 : x - Step 2: Convert to fraction form
290,413,643.80/435,620,465.70 = 137,358,635.80/x - Step 3: Cross multiply
290,413,643.80x = 435,620,465.70 × 137,358,635.80 - Step 4: Simplify right side
290,413,643.80x = 59,836,232,895,112,696 - Step 5: Solve for x
x = 59,836,232,895,112,696/290,413,643.80 - Step 6: Final answer
x = 206,037,953.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.